// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <memory>

#include "base/command_line.h"
#include "base/location.h"
#include "base/run_loop.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "content/browser/media/session/media_session_impl.h"
#include "content/browser/media/session/mock_media_session_player_observer.h"
#include "content/public/test/content_browser_test.h"
#include "content/shell/browser/shell.h"
#include "media/base/media_content_type.h"

namespace content {

class AudioFocusDelegateAndroidBrowserTest : public ContentBrowserTest {
};

// MAYBE_OnAudioFocusChangeAfterDtorCrash will hit a DCHECK before the crash, it
// is the only way found to actually reproduce the crash so as a result, the
// test will only run on builds without DCHECK's.
#if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
// TODO(crbug.com/602787) The test is flaky, disabling it everywhere.
#define MAYBE_OnAudioFocusChangeAfterDtorCrash \
    DISABLED_OnAudioFocusChangeAfterDtorCrash
#else
#define MAYBE_OnAudioFocusChangeAfterDtorCrash \
    DISABLED_OnAudioFocusChangeAfterDtorCrash
#endif

IN_PROC_BROWSER_TEST_F(AudioFocusDelegateAndroidBrowserTest,
    MAYBE_OnAudioFocusChangeAfterDtorCrash)
{
    std::unique_ptr<MockMediaSessionPlayerObserver> player_observer(
        new MockMediaSessionPlayerObserver);

    MediaSessionImpl* media_session = MediaSessionImpl::Get(shell()->web_contents());
    ASSERT_TRUE(media_session);

    WebContents* other_web_contents = CreateBrowser()->web_contents();
    MediaSessionImpl* other_media_session = MediaSessionImpl::Get(other_web_contents);
    ASSERT_TRUE(other_media_session);

    player_observer->StartNewPlayer();
    media_session->AddPlayer(player_observer.get(), 0,
        media::MediaContentType::Persistent);
    EXPECT_TRUE(media_session->IsActive());
    EXPECT_FALSE(other_media_session->IsActive());

    player_observer->StartNewPlayer();
    other_media_session->AddPlayer(player_observer.get(), 1,
        media::MediaContentType::Persistent);
    EXPECT_TRUE(media_session->IsActive());
    EXPECT_TRUE(other_media_session->IsActive());

    shell()->CloseAllWindows();

    // Give some time to the AudioFocusManager to send an audioFocusChange message
    // to the listeners. If the bug is still present, it will crash.
    {
        base::RunLoop run_loop;
        base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
            FROM_HERE, run_loop.QuitClosure(), base::TimeDelta::FromSeconds(1));
        run_loop.Run();
    }
}

} // namespace content
